121202111120 has 240 divisors, whose sum is σ = 308680957440. Its totient is φ = 44205004800.

The previous prime is 121202111083. The next prime is 121202111137. The reversal of 121202111120 is 21111202121.

It is a junction number, because it is equal to n+sod(n) for n = 121202111095 and 121202111104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296337476 + ... + 296337884.

It is an arithmetic number, because the mean of its divisors is an integer number (1286170656).

Almost surely, 2^121202111120 is an apocalyptic number.

121202111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121202111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154340478720).

121202111120 is an abundant number, since it is smaller than the sum of its proper divisors (187478846320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121202111120 is a wasteful number, since it uses less digits than its factorization.

121202111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121202111120 its reverse (21111202121), we get a palindrome (142313313241).

The spelling of 121202111120 in words is "one hundred twenty-one billion, two hundred two million, one hundred eleven thousand, one hundred twenty".